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https://issues.apache.org/jira/browse/KAFKA-10608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17213608#comment-17213608
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Matthias J. Sax commented on KAFKA-10608:
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In general, this is a know issue, but it also depends what type of changes you
make and if you name your operators. Can you elaborate what changes you refer
to in particular?
> Add support for rolling upgrade with topology changes
> -----------------------------------------------------
>
> Key: KAFKA-10608
> URL: https://issues.apache.org/jira/browse/KAFKA-10608
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Ashish Surana
> Priority: Major
>
> We observed that if we modify the topology then we can't do rolling upgrade
> as it seems all the instances should have exact same topology.
> Everytime we upgrade topology we have to incur downtime, so we should explore
> if this can be supported fully and if not fully then should be doable for
> some subset of topology upgrades.
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